#include <stdio.h>
int find_number(int n, int x, int numbers[]) {
    for (int i = 0; i < n; i++) {
        if (numbers[i] == x) {
            return i;
        }
    }
    return -1;
}
int main() {
    int n, x, i;
    int numbers[20];

    scanf("%d %d", &n, &x);
    for(i = 0; i < n; i++) {
        scanf("%d", &numbers[i]);
    }

    int position = find_number(n, x, numbers);
    if (position == -1) {
        printf("Not Found\n");
    } else {
        printf("%d\n", position);
    }

    return 0;
}



